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The MUELLER STREAMLINE K277450 is a DWV double fixture tee designed for drain, waste, and vent piping systems. This fitting accepts two fixture branch connections at a single point, allowing two fixtures to drain into a common vertical or horizontal DWV stack. Constructed from PVC with a hub end style, it provides a solvent-weld connection that creates a leak-resistant joint suitable for residential and light commercial plumbing installations. Licensed plumbers install this fitting during rough-in work on new construction or remodel projects where back-to-back fixture arrangements are required.
This double fixture tee is used in residential and light commercial DWV systems where two plumbing fixtures, such as sinks or lavatories, must connect to the same drain line at a shared location. The hub end connections accept standard PVC DWV pipe and are solvent-welded in place. This fitting is appropriate for above-ground, gravity-flow drain and vent applications and is not intended for pressure service.
Designed as an OEM-style replacement and new-installation fitting for standard 2 inch nominal PVC DWV drain, waste, and vent piping systems.
Installation should be performed by a licensed plumber in accordance with the applicable edition of the International Plumbing Code or local equivalent. Shut off the water supply and ensure the drain line is clear and dry before cutting into an existing DWV system. Use the correct PVC DWV primer and solvent cement rated for the pipe and fitting material, and allow full cure time before restoring service. Do not use this fitting in pressurized supply lines or underground burial applications unless confirmed as rated for such use.
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